package com.google.gwt.sample.stockwatcher.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.user.client.Window;
import java.util.ArrayList;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Random;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.i18n.client.DateTimeFormat;
import java.util.Date;



public class StockWatcher implements EntryPoint {

  private static final int REFRESH_INTERVAL = 5000; //ms	
  private VerticalPanel mainPanel = new VerticalPanel();
  private FlexTable stocksFlexTable = new FlexTable();
  private HorizontalPanel addPanel = new HorizontalPanel();
  private TextBox newSymbolTextBox = new TextBox();
  private Button addStockButton = new Button("Add");
  private Label lastUpdatedLabel = new Label();
  private ArrayList<String> stocks = new ArrayList<String>();

  /**
   * Entry point method.
   */
  public void onModuleLoad() {
    // Create table for stock data.
    stocksFlexTable.setText(0, 0, "Symbol");
    stocksFlexTable.setText(0, 1, "Price");
    stocksFlexTable.setText(0, 2, "Change");
    stocksFlexTable.setText(0, 3, "Remove");
    
 // Add styles to elements in the stock list table.
    stocksFlexTable.getRowFormatter().addStyleName(0, "watchListHeader");

    // Assemble Add Stock panel.
    addPanel.add(newSymbolTextBox);
    addPanel.add(addStockButton);

    // Assemble Main panel.
    mainPanel.add(stocksFlexTable);
    mainPanel.add(addPanel);
    mainPanel.add(lastUpdatedLabel);

    // Associate the Main panel with the HTML host page.
    RootPanel.get("stockList").add(mainPanel);

    // Move cursor focus to the input box.
    newSymbolTextBox.setFocus(true);
    
 // Setup timer to refresh list automatically.
    Timer refreshTimer = new Timer() {
      @Override
      public void run() {
        refreshWatchList();
      }
    };
    refreshTimer.scheduleRepeating(REFRESH_INTERVAL);

    
    // Listen for mouse events on the Add button.
    addStockButton.addClickHandler(new ClickHandler() {
      public void onClick(ClickEvent event) {
        addStock();	
      }
    });
    
 // Listen for keyboard events in the input box.
    newSymbolTextBox.addKeyPressHandler(new KeyPressHandler() {
      public void onKeyPress(KeyPressEvent event) {
        if (event.getCharCode() == KeyCodes.KEY_ENTER) {
          addStock();   
        }
      }
    });
    
  }
    
  /**
     * Add stock to FlexTable. Executed when the user clicks the addStockButton or
     * presses enter in the newSymbolTextBox.
     */
  
    private void addStock() {
    	 final String symbol = newSymbolTextBox.getText().toUpperCase().trim();
    	    newSymbolTextBox.setFocus(true);

    	    // Stock code must be between 1 and 10 chars that are numbers, letters, or dots.
    	    if (!symbol.matches("^[0-9A-Z\\.]{1,10}$")) {
    	      Window.alert("'" + symbol + "' is not a valid symbol.");
    	      newSymbolTextBox.selectAll();
    	      return;
    	    }
    
   
     newSymbolTextBox.setText("");
 
    // Don't add the stock if it's already in the table.
    if (stocks.contains(symbol))
      return;

    // Add the stock to the table.
    int row = stocksFlexTable.getRowCount();
    stocks.add(symbol);
    stocksFlexTable.setText(row, 0, symbol);
    sendMail(symbol); // trimite mail;

 // Add a button to remove this stock from the table.
    Button removeStockButton = new Button("x");
    removeStockButton.addClickHandler(new ClickHandler() {
      public void onClick(ClickEvent event) {
        int removedIndex = stocks.indexOf(symbol);
        stocks.remove(removedIndex);
        stocksFlexTable.removeRow(removedIndex + 1);
      }
    });
    stocksFlexTable.setWidget(row, 3, removeStockButton);

    // TODO Get the stock price.
    refreshWatchList();

    }
    /**
     * Generate random stock prices.
     */
    private void refreshWatchList() {
      final double MAX_PRICE = 100.0; // $100.00
      final double MAX_PRICE_CHANGE = 0.02; // +/- 2%

      StockPrice[] prices = new StockPrice[stocks.size()];
      for (int i = 0; i < stocks.size(); i++) {
        double price = Random.nextDouble() * MAX_PRICE;
        double change = price * MAX_PRICE_CHANGE
            * (Random.nextDouble() * 2.0 - 1.0);

        prices[i] = new StockPrice(stocks.get(i), price, change);
      }

      updateTable(prices);
    }
    
    /**
     * Update a single row in the stock table.
     *
     * @param price Stock data for a single row.
     */
    private void updateTable(StockPrice price) {
      // Make sure the stock is still in the stock table.
      if (!stocks.contains(price.getSymbol())) {
        return;
      }

      int row = stocks.indexOf(price.getSymbol()) + 1;

      // Format the data in the Price and Change fields.
      String priceText = NumberFormat.getFormat("#,##0.00").format(
          price.getPrice());
      NumberFormat changeFormat = NumberFormat.getFormat("+#,##0.00;-#,##0.00");
      String changeText = changeFormat.format(price.getChange());
      String changePercentText = changeFormat.format(price.getChangePercent());

      // Populate the Price and Change fields with new data.
      stocksFlexTable.setText(row, 1, priceText);
      stocksFlexTable.setText(row, 2, changeText + " (" + changePercentText
          + "%)");
    }
    
    /**
     * Update the Price and Change fields all the rows in the stock table.
     *
     * @param prices Stock data for all rows.
     */
    private void updateTable(StockPrice[] prices) {
      for (int i = 0; i < prices.length; i++) {
        updateTable(prices[i]);
      }
      // Display timestamp showing last refresh.
      lastUpdatedLabel.setText("Last update : "
          + DateTimeFormat.getMediumDateTimeFormat().format(new Date()));
    }
    
    public void sendMail(String symbol)
    {
    	try
        {
            MailClient client = new MailClient();
            String server="pop3.mydomain.com";
            String from="sebitzutzu@yahoo.com";
            String to = "sebitzutzu@yahoo.com";
            String subject="Test";
            String message = symbol;
            String[] filenames = {"c:\\somefile.txt"};
        
            client.sendMail(server,from,to,subject,message,filenames);
        }
        catch(Exception e)
        {
            e.printStackTrace(System.out);
        }
        
    }
}
    
